摘要
对于大功率的GTO逆变器,提出了一种零电压转换(ZVS)的三电平辅助谐振变换极逆变器(ARCPI)。提出的辅助变换电路由一个谐振电感和两个双向开关组成,此电路没有增加主开关的电压和电流应力,却给主开关提供了ZVS的条件。辅助开关实现零电流转换,它可以采用低成本的晶闸管。文中提出的ARCPI能够在产生较少谐波的情况下,处理更高的电压和更大的功率(1～10MVA),并阐明了提出的ARCPI的工作过程及分析并总结了其特性。用一个10kW,4kHz的样机证明了其工作原理。
A zero-voltage-switching(ZVS) three-level auxiliary resonant commutated pole inverter(ARCPI) is presented for high power GTO ones. The proposed auxiliary commutation circuit consists of one resonant inductor and two bidirectional switch, which provides the ZVS condition to the main switch without increasing voltage or current stresses. The auxiliary switch operates with zero-current-switching(ZCS),which can use low-cost thyristor. The proposed ARCPI can handle higher voltage and higher power(1～(10 MVA)) with fewer harmonics. Operation and analysis of the proposed ARCPI are illustrated and the features are summarized .Experimental results with 10 kW,(4 kHz) prototype are presented to verify the principle of operation.
出处
《通信电源技术》
2004年第6期10-14,共5页
Telecom Power Technology
